Our History
The company was established in Fangshan District, Beijing, focusing on the field of industrial gas equipment. The core team consisted of experts in gas separation technology, professional electricians and mechanical engineers, as well as sales elites from both domestic and international markets.
The company independently developed small modular nitrogen generators, liquid nitrogen machines, and oxygen generators, featuring energy-saving and high-efficiency characteristics. The design has been patented, filling the gap in nitrogen demand for small and medium-sized enterprises in China. At the same time, it is constantly innovating new products.
Expanding overseas markets, obtaining ISO9001 quality management system certification, EU-recognized EC/EU certificates, all pressure vessels comply with ASME standards, product performance is recognized by international customers, and services cover multiple fields such as food preservation, electronic manufacturing, medicine, metallurgy, and agriculture.
Entering Southeast Asia, Middle East, America, Europe and other countries through platforms such as Alibaba International Station and Made-in-China Network, with the first-year export orders exceeding 50 units.
Domestic: Establishing a domestic all-region agent network, launching an integrated solution of liquid nitrogen machine + nitrogen generator, as well as ultra-large liquid nitrogen cryogenic equipment. The customer repeat purchase rate increased by 35%.
Overseas: Participating in multiple international exhibitions such as Hanover Industrial Fair in Germany, expanding into broader overseas markets.
The factory facilities and scale were comprehensively upgraded, production efficiency gradually increased. The nitrogen generators, liquid nitrogen machines and oxygen generators all added more intelligent remote monitoring systems, achieving cloud management of equipment operation data, and connecting to mobile phone APPs for simpler operation. It received 4 national patents and the delivery cycle was shortened by 30%.
Recognized as a "National High-Tech Enterprise", collaborating with dozens of domestic universities to establish gas separation technology laboratories, providing technical support to multiple universities, and receiving wide acclaim.
Global cooperation clients exceeded 300, with domestic focus on semiconductor and new energy industries, and overseas expansion to emerging markets in South America and Africa.
Future Outlook:Based on China's intelligent manufacturing, building a global leading industrial gas equipment service provider!
LDH GAS SYSTEMS COMPANY LIMITED is an enterprise integrating research, design, manufacturing, sales and service of various air separation equipment and low-temperature application equipment. The company holds a number of national patent certificates and computer software copyrights, and has obtained EU CE certification and ISO9001 certification.
The company attaches great importance to technological innovation and cooperates with foreign counterparts. It also conducts exchanges and cooperation with many domestic research institutions and universities. It fully absorbs the advanced design concepts, strict management procedures and exquisite manufacturing technologies of domestic and foreign enterprises. On the basis of sincere service support, it boldly adopts new processes and technologies to enhance the company's capabilities in product R&D, manufacturing and service, and moves towards energy conservation, emission reduction, high quality and diversification.
After years of research and exploration in the natural gas industry, we have always adhered to providing high-quality products and professional services to customers in various industries. We firmly believe in the concept of using Chinese products to serve global users, and utilize cloud technology to provide faster and more intuitive services to customers around the world.
Our Product
Nitrogen Generator
- PSA Nitrogen Generator
- Membrane Nitrogen Generator
- High Purity Nitrogen Generator
- Refrigerated nitrogen generator/Cryogenic Nitrogen Generator
- Containerized Nitrogen Generator
Liquid Nitrogen generator
- Small Liquid Nitrogen generator
- Medium-sized liquid nitrogen generator
- Small cryogenic liquid nitrogen generator
Oxygen Generator
- Oxygen Concentrator
- PSA Oxygen Generator
- 99.5% High Purity Oxygen Generator
- VPSA oxygen generator
- Containerized Oxygen Generator
Refrigerated dryer
- Constant-temperature type refrigerated dryer
- High-temperature type refrigerated dryer
Carbon molecular sieve
- oxygen molecular sieve
Compressor
- Piston type air compressor
- Vortex type air compressor
- Lobe type air compressor
- Helical type air compressor
- Water-lubricated lobe type air compressor
- Centrifugal type air compressor
Pressurization tank charging system
- Nitrogen Booster Pump
- Oxygen Booster Pump
- Gas Booster
- Oxygen/Nitrogen Filling Bench
- Oxygen Cylinder
- Nitrogen Cylinder
Tank/dewar
- YDS aluminum liquid nitrogen tank
- Self-Pressurizing Liquid Nitrogen Tank
- DPL high pressure liquid nitrogen tank
- large liquid nitrogen tank
- liquid oxygen tank
- liquid helium tank
Air drying machine/air dryer
- Thermal-free air-drying machine
- Microwave drying machine
Liquid nitrogen vacuum pipe
- vacuum hose
- vacuum hard pipe
Laboratory gas generator
- hydrogen generator
- nitrogen generator
- oxygen generator
- air generator
Gas analyzer
- Nitrogen analyzer
- oxygen analyzer
- carbon dioxide analyzer
- hydrogen gas analyzer
Dew point instrument
Compressed Air Filter
Liquid nitrogen drip infusion machine
Product Application
Nitrogen Generator
1. Chemical and Petroleum Industry：Inert protection, purging of storage tanks and residual gases, oil and gas extraction, pipeline pressurized transportation.
2. Electronics and Semiconductor Industry
Electronic manufacturing: Semiconductor chip production, LED packaging, LCD panel manufacturing, prevention of oxidation.
SMT soldering: As a protective gas in reflow soldering and wave soldering processes.
3. Food and Beverage Industry
Food preservation, beverage canning processing, prevention of oxidation and deterioration.
Grain storage: Nitrogen for pest control and mold inhibition.
4. Medicine and Biotechnology
Drug production: Protection of oxygen-sensitive drugs (such as vitamins, antibiotics) during production and storage.
Biological cultivation: Providing a sterile and anaerobic environment for cell cultivation and laboratory research.
5. Metal Processing and Heat Treatment
Welding protection: Preventing metal oxidation. Heat treatment: Using nitrogen as a protective atmosphere in processes such as annealing and quenching.
3D printing: Avoiding high-temperature oxidation in metal additive manufacturing.
6. Rubber and Plastic Industry
Tire vulcanization: Nitrogen vulcanization process to improve tire strength and quality.
Plastic injection molding: Preventing plastic oxidation and discoloration at high temperatures.
7. Electricity and Energy
Transformer protection: Nitrogen filling to prevent transformer oil aging.
Energy storage systems: Used for drying rooms and liquid injection in lithium battery production.
Liquid nitrogen machine
1. Medical and Biotechnology Fields: Preservation of biological samples, cryogenic storage of stem cells, embryos, sperm, eggs (for assisted reproductive technologies).
Preservation of vaccines, blood products, tissue samples (such as umbilical cord blood banks, biobanks), cryogenic medical treatment, liquid nitrogen cryosurgery (for treating skin diseases, cervical lesions, tumors, etc.), low-temperature cryoablation (such as treatment of arrhythmia), laboratory research, provision of ultra-low temperature environments for cell culture, bacterial preservation, genetic engineering experiments.
2. Food Industry: Rapid freezing and preservation of food, low-temperature maintenance during cold chain transportation (refrigerated vehicles, cold storage), food processing, low-temperature grinding, food packaging with nitrogen preservation.
3. Industrial Manufacturing and Materials: Scientific metal processing, deep cryogenic treatment (-196°C) to enhance the hardness and wear resistance of tools, molds, and aerospace components, ultra-low temperature shrinkage assembly, rubber and plastics, low-temperature grinding and recycling of waste tires, electronics and semiconductors, rapid cooling during chip testing, high-purity liquid nitrogen for semiconductor cleaning processes.
4. Energy and Research: Superconductivity technology, cooling superconducting magnets, superconducting cables, maintenance of low-temperature environments for quantum computers.
5. Space and Energy Experiments, rocket fuel system testing, simulation of space environments, development of liquid nitrogen engines.
6. Firefighting: Extinguishing lithium battery fires.
7. Entertainment and Exhibition: Stage smoke effects (liquid nitrogen vaporization produces white fog), popular science experiments.
8. Inert Protection in Hazardous Chemical Transportation